After Reading this you will be able to play almost all type of media files on your computer. Different media files need different codecs to run properly. This problem can sometimes lead to misery for a user. You want to play a song or a movie and you get an error that some codec is missing and required to play that file.

The Simplest of all the ways to get those files to play are :

Download and install VLC media player

or Download and Install K-lite codec package

K-lite codec package comes with Media Player Classic that I personally like to watch movies on.